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Manjusha R, Shekhar R, Kumar SJ. Ultrasound-assisted extraction of Pb, Cd, Cr, Mn, Fe, Cu, Zn from edible oils with tetramethylammonium hydroxide and EDTA followed by determination using graphite furnace atomic absorption spectrometer. Food Chem 2019; 294:384-389. [DOI: 10.1016/j.foodchem.2019.04.104] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/27/2019] [Accepted: 04/25/2019] [Indexed: 10/26/2022]
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Manjusha R, Shekhar R, Jaikumar S. Direct determination of impurities in high purity chemicals by electrolyte cathode discharge atomic emission spectrometry (ELCAD-AES). Microchem J 2019. [DOI: 10.1016/j.microc.2018.10.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Subhendu BS, Shekhar R. The effect of neoadjuvant chemotherapy on pathological response and the hormone receptor profile in locally advanced breast carcinomas. S AFR J SURG 2018. [DOI: 10.17159/2078-5151/2018/v56n4a2609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Quon H, Park S, Plishker W, Wong J, McNutt T, Shekhar R, Lee J. Preliminary Clinical Evidence of Parotid Subvolume Radiosensitivity and the Risk of Radiation-Induced Xerostomia in Head and Neck Cancer (HNC) Patients. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Reddy MA, Shekhar R, Jai Kumar S. An improved matrix separation method for characterization of ultrapure germanium (8N). Talanta 2016; 159:14-22. [PMID: 27474273 DOI: 10.1016/j.talanta.2016.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 06/01/2016] [Accepted: 06/02/2016] [Indexed: 11/19/2022]
Abstract
An improved matrix separation method has been described to characterize ultrapure germanium of 8N (99.999999%) purity. In this method, temperature of the reaction vessel in which in-situ generated chlorine gas reacts with germanium solid material directly is optimized to quantitatively remove Ge matrix from all its impurities. Optimized reaction temperature has been found to be 230±5°C. Recovery studies on more than 60 elements have been carried out at the optimized temperature. Recoveries of all the analytes except As, Se, Sn, Hg, Tl are found to be quantitative. The method has been examined for various amounts of Ge material and found to be suitable even for 10g of Ge sample and provides low parts per billion and trillion levels of process blanks. Determination of concentrations of impurities has been done by inductively coupled plasma quadrupole mass spectrometer (ICP-QMS) and high resolution continuum source graphite furnace atomic absorption spectrometer (HR-CS-GFAAS). In the absence of certified reference materials for ultrapure germanium, accuracy of the proposed method is established by spike recovery tests. Precision of this method is found to vary from 7% to 50% for concentrations between 4 and 0.004ngg(-1). Limits of detection (LOD) for the target analytes are found to be between 6 and 0.011ngmL(-1) or 1.8-0.003ngg(-1) for the proposed procedure. The method has been successfully applied for that characterization of ultrapure germanium material of 8N purity.
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Affiliation(s)
- M A Reddy
- National Centre for Compositional Characterization of Materials (NCCCM) Bhabha Atomic Research Centre, Hyderabad 500062, India
| | - R Shekhar
- National Centre for Compositional Characterization of Materials (NCCCM) Bhabha Atomic Research Centre, Hyderabad 500062, India.
| | - Sunil Jai Kumar
- National Centre for Compositional Characterization of Materials (NCCCM) Bhabha Atomic Research Centre, Hyderabad 500062, India
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Park S, Quon H, McNutt T, Plishker W, Shekhar R, Lee J. SU-F-J-218: Predicting Radiation-Induced Xerostomia by Dosimetrically Accounting for Daily Setup Uncertainty During Head and Neck IMRT. Med Phys 2016. [DOI: 10.1118/1.4956126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Khandelwal H, Singh R, Bind A, Sunil S, Chakravartty J, Ghosh A, Dhandharia P, Bhachawat D, Shekhar R, Kumar SJ. Tensile properties and fracture toughness of Zr–2.5Nb alloy pressure tubes of IPHWR220. Nuclear Engineering and Design 2015. [DOI: 10.1016/j.nucengdes.2015.07.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Park S, Robinson A, Plishker W, Shekhar R, Kiess A, Quon H, Wong J, Lee J. TU-G-BRA-05: Predicting Volume Change of the Tumor and Critical Structures Throughout Radiation Therapy by CT-CBCT Registration with Local Intensity Correction. Med Phys 2015. [DOI: 10.1118/1.4925755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Park S, Plishker W, Robinson A, Zaki G, Shekhar R, McNutt T, Wong J, Lee J. TU-AB-303-08: GPU-Based Software Platform for Efficient Image-Guided Adaptive Radiation Therapy. Med Phys 2015. [DOI: 10.1118/1.4925525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Kwok CS, Clark AB, Musgrave SD, Potter JF, Dalton G, Day DJ, George A, Metcalf AK, Ngeh J, Nicolson A, Owusu-Agyei P, Shekhar R, Walsh K, Warburton EA, Bachmann MO, Myint PK. The SOAR stroke score predicts hospital length of stay in acute stroke: an external validation study. Int J Clin Pract 2015; 69:659-65. [PMID: 25648886 DOI: 10.1111/ijcp.12577] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
AIMS The objective of this study is to externally validate the SOAR stroke score (Stroke subtype, Oxfordshire Community Stroke Project Classification, Age and prestroke modified Rankin score) in predicting hospital length of stay (LOS) following an admission for acute stroke. METHODS We conducted a multi-centre observational study in eight National Health Service hospital trusts in the Anglia Stroke & Heart Clinical Network between September 2008 and April 2011. The usefulness of the SOAR stroke score in predicting hospital LOS in the acute settings was examined for all stroke and then stratified by discharge status (discharged alive or died during the admission). RESULTS A total of 3596 patients (mean age 77 years) with first-ever or recurrent stroke (92% ischaemic) were included. Increasing LOS was observed with increasing SOAR stroke score (p < 0.001 for both mean and median) and the SOAR stroke score of 0 had the shortest mean LOS (12 ± 20 days) while the SOAR stroke score of 6 had the longest mean LOS (26 ± 28 days). Among patients who were discharged alive, increasing SOAR stroke score had a significantly higher mean and median LOS (p < 0.001 for both mean and median) and the LOS peaked among patients with score value of 6 [mean (SD) 35 ± 31 days, median (IQR) 23 (14-48) days]. For patients who died as in-patient, there was no significant difference in mean or median LOS with increasing SOAR stroke score (p = 0.68 and p = 0.79, respectively). CONCLUSION This external validation study confirms the usefulness of the SOAR stroke score in predicting LOS in patients with acute stroke especially in those who are likely to survive to discharge. This provides a simple prognostic score useful for clinicians, patients and service providers.
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Affiliation(s)
- C S Kwok
- Institute of Applied Health Sciences, School of Medicine & Dentistry, University of Aberdeen, Aberdeen, UK
- University of Manchester, Manchester, UK
| | | | | | - J F Potter
- Norwich Medical School, Norwich, UK
- Norfolk and Norwich University Hospital, Norwich, UK
| | - G Dalton
- Anglia Stroke & Heart Clinical Network, Cambridge, UK
| | - D J Day
- Addenbrooke's Hospital, Cambridge, UK
| | - A George
- James Paget University Hospital, Gorleston, UK
| | - A K Metcalf
- Norwich Medical School, Norwich, UK
- Norfolk and Norwich University Hospital, Norwich, UK
| | - J Ngeh
- Colchester Hospital, Colchester, UK
| | - A Nicolson
- West Suffolk Hospital, Bury St Edmunds, UK
| | | | - R Shekhar
- Queen Elizabeth Hospital, Kings Lynn, UK
| | - K Walsh
- Hinchingbrooke Hospital, Huntingdon, UK
| | | | | | - P K Myint
- Institute of Applied Health Sciences, School of Medicine & Dentistry, University of Aberdeen, Aberdeen, UK
- Norwich Medical School, Norwich, UK
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Plishker W, Zaki G, Lee J, Wong J, McNutt T, Shekhar R. Retrospective Assessment of Image Mask Box Sizing for Automatic Patient Positioning. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Aaltonen T, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, Apollinari G, Appel J, Arisawa T, Artikov A, Asaadi J, Ashmanskas W, Auerbach B, Aurisano A, Azfar F, Badgett W, Bae T, Barbaro-Galtieri A, Barnes V, Barnett B, Guimaraes da Costa J, Barria P, Bartos P, Bauce M, Bedeschi F, Beecher D, Behari S, Bellettini G, Bellinger J, Benjamin D, Beretvas A, Bhatti A, Binkley M, Bizjak I, Bland K, Blumenfeld B, Bocci A, Bodek A, Bortoletto D, Boudreau J, Boveia A, Brigliadori L, Bromberg C, Brucken E, Budagov J, Budd H, Burkett K, Busetto G, Bussey P, Butti P, Buzatu A, Calamba A, Camarda S, Campanelli M, Canelli F, Carls B, Carlsmith D, Carosi R, Carrillo S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavaliere V, Cavalli-Sforza M, Cerri A, Cerrito L, Chen Y, Chertok M, Chiarelli G, Chlachidze G, Cho K, Chokheli D, Clark A, Clarke C, Convery M, Conway J, Corbo M, Cordelli M, Cox C, Cox D, Cremonesi M, Cruz D, Cuevas J, Culbertson R, d’Ascenzo N, Datta M, de Barbaro P, Demortier L, Deninno M, D’Errico M, Devoto F, Di Canto A, Di Ruzza B, Dittmann J, Donati S, D’Onofrio M, Dorigo M, Driutti A, Ebina K, Edgar R, Elagin A, Erbacher R, Errede S, Esham B, Eusebi R, Farrington S, Fernández Ramos J, Field R, Flanagan G, Forrest R, Franklin M, Freeman J, Frisch H, Funakoshi Y, Galloni C, Garfinkel A, Garosi P, Gerberich H, Gerchtein E, Giagu S, Giakoumopoulou V, Gibson K, Ginsburg C, Giokaris N, Giromini P, Giurgiu G, Glagolev V, Glenzinski D, Gold M, Goldin D, Golossanov A, Gomez G, Gomez-Ceballos G, Goncharov M, González López O, Gorelov I, Goshaw A, Goulianos K, Gramellini E, Grinstein S, Grosso-Pilcher C, Group R, Hahn S, Han J, Happacher F, Hara K, Hare M, Harr R, Harrington-Taber T, Hatakeyama K, Hays C, Heinrich J, Herndon M, Hocker A, Hong Z, Hopkins W, Hou S, Hughes R, Husemann U, Hussein M, Huston J, Introzzi G, Iori M, Ivanov A, James E, Jang D, Jayatilaka B, Jeon E, Jindariani S, Jones M, Joo K, Jun S, Junk T, Kambeitz M, Kamon T, Karchin P, Kasmi A, Kato Y, Ketchum W, Keung J, Kilminster B, Kim D, Kim H, Kim J, Kim M, Kim S, Kim S, Kim Y, Kim Y, Kimura N, Kirby M, Knoepfel K, Kondo K, Kong D, Konigsberg J, Kotwal A, Kreps M, Kroll J, Kruse M, Kuhr T, Kurata M, Laasanen A, Lammel S, Lancaster M, Lannon K, Latino G, Lee H, Lee J, Leo S, Leone S, Lewis J, Limosani A, Lipeles E, Lister A, Liu H, Liu Q, Liu T, Lockwitz S, Loginov A, Lucchesi D, Lucà A, Lueck J, Lujan P, Lukens P, Lungu G, Lys J, Lysak R, Madrak R, Maestro P, Malik S, Manca G, Manousakis-Katsikakis A, Marchese L, Margaroli F, Marino P, Martínez M, Matera K, Mattson M, Mazzacane A, Mazzanti P, McNulty R, Mehta A, Mehtala P, Mesropian C, Miao T, Mietlicki D, Mitra A, Miyake H, Moed S, Moggi N, Moon C, Moore R, Morello M, Mukherjee A, Muller T, Murat P, Mussini M, Nachtman J, Nagai Y, Naganoma J, Nakano I, Napier A, Nett J, Neu C, Nigmanov T, Nodulman L, Noh S, Norniella O, Nurse E, Oakes L, Oh S, Oh Y, Oksuzian I, Okusawa T, Orava R, Ortolan L, Pagliarone C, Palencia E, Palni P, Papadimitriou V, Parker W, Pauletta G, Paulini M, Paus C, Phillips T, Piacentino G, Pianori E, Pilot J, Pitts K, Plager C, Pondrom L, Poprocki S, Potamianos K, Pranko A, Prokoshin F, Ptohos F, Punzi G, Ranjan N, Redondo Fernández I, Renton P, Rescigno M, Riddick T, Rimondi F, Ristori L, Robson A, Rodriguez T, Rolli S, Ronzani M, Roser R, Rosner J, Ruffini F, Ruiz A, Russ J, Rusu V, Sakumoto W, Sakurai Y, Santi L, Sato K, Saveliev V, Savoy-Navarro A, Schlabach P, Schmidt E, Schwarz T, Scodellaro L, Scuri F, Seidel S, Seiya Y, Semenov A, Sforza F, Shalhout S, Shears T, Shekhar R, Shepard P, Shimojima M, Shochet M, Simonenko A, Sliwa K, Smith J, Snider F, Song H, Sorin V, St. Denis R, Stancari M, Stelzer-Chilton O, Stentz D, Strologas J, Sudo Y, Sukhanov A, Sun S, Suslov I, Takemasa K, Takeuchi Y, Tang J, Tecchio M, Shreyber-Tecker I, Teng P, Thom J, Thomson E, Thukral V, Toback D, Tokar S, Tollefson K, Tomura T, Tonelli D, Torre S, Torretta D, Totaro P, Trovato M, Ukegawa F, Uozumi S, Vázquez F, Velev G, Vellidis C, Vernieri C, Vidal M, Vilar R, Vizán J, Vogel M, Volpi G, Wagner P, Wallny R, Wang S, Waters D, Wester III W, Whiteson D, Wicklund A, Wilbur S, Williams H, Wilson J, Wilson P, Winer B, Wittich P, Wolbers S, Wolfe H, Wright T, Wu X, Wu Z, Yamamoto K, Yamato D, Yang T, Yang U, Yang Y, Yao WM, Yeh G, Yi K, Yoh J, Yorita K, Yoshida T, Yu G, Yu I, Zanetti A, Zeng Y, Zhou C, Zucchelli S. Precise measurement of theW-boson mass with the Collider Detector at Fermilab. Int J Clin Exp Med 2014. [DOI: 10.1103/physrevd.89.072003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Gupta P, Shekhar R, O'Mahony MS, Karlsson J, Soderstrom A, Berggren AC, Sumukadas D, Price R, Leese GP, Trucco E, McMurdo MET. Bone, muscle and rheumatology. Age Ageing 2013. [DOI: 10.1093/ageing/aft097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lee J, Jacques R, Li W, Plishker W, Moore J, Shekhar R, McNutt T, Wong J. SU-E-J-205: Fast Computation of Actual Dose Delivered to the Patient for IMRT Treatment Quality Assessment and Adaptive Radiotherapy. Med Phys 2013. [DOI: 10.1118/1.4814417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Aaltonen T, Álvarez González B, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, Apollinari G, Appel JA, Arisawa T, Artikov A, Asaadi J, Ashmanskas W, Auerbach B, Aurisano A, Azfar F, Badgett W, Bae T, Barbaro-Galtieri A, Barnes VE, Barnett BA, Barria P, Bartos P, Bauce M, Bedeschi F, Beecher D, Behari S, Bellettini G, Bellinger J, Benjamin D, Beretvas A, Bhatti A, Binkley M, Bisello D, Bizjak I, Bland KR, Blumenfeld B, Bocci A, Bodek A, Bortoletto D, Boudreau J, Boveia A, Brigliadori L, Bromberg C, Brucken E, Budagov J, Budd HS, Burkett K, Busetto G, Bussey P, Buzatu A, Calamba A, Calancha C, Camarda S, Campanelli M, Campbell M, Canelli F, Carls B, Carlsmith D, Carosi R, Carrillo S, Carron S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavaliere V, Cavalli-Sforza M, Cerri A, Cerrito L, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Chlebana F, Cho K, Chokheli D, Chung WH, Chung YS, Ciocci MA, Clark A, Clarke C, Compostella G, Convery ME, Conway J, Corbo M, Cordelli M, Cox CA, Cox DJ, Crescioli F, Cuevas J, Culbertson R, Dagenhart D, d'Ascenzo N, Datta M, de Barbaro P, Dell'Orso M, Demortier L, Deninno M, Devoto F, d'Errico M, Di Canto A, Di Ruzza B, Dittmann JR, D'Onofrio M, Donati S, Dong P, Dorigo M, Dorigo T, Ebina K, Elagin A, Eppig A, Erbacher R, Errede S, Ershaidat N, Eusebi R, Farrington S, Feindt M, Fernandez JP, Field R, Flanagan G, Forrest R, Frank MJ, Franklin M, Freeman JC, Funakoshi Y, Furic I, Gallinaro M, Garcia JE, Garfinkel AF, Garosi P, Gerberich H, Gerchtein E, Giagu S, Giakoumopoulou V, Giannetti P, Gibson K, Ginsburg CM, Giokaris N, Giromini P, Giurgiu G, Glagolev V, Glenzinski D, Gold M, Goldin D, Goldschmidt N, Golossanov A, Gomez G, Gomez-Ceballos G, Goncharov M, González O, Gorelov I, Goshaw AT, Goulianos K, Grinstein S, Grosso-Pilcher C, Group RC, Guimaraes da Costa J, Hahn SR, Halkiadakis E, Hamaguchi A, Han JY, Happacher F, Hara K, Hare D, Hare M, Harr RF, Hatakeyama K, Hays C, Heck M, Heinrich J, Herndon M, Hewamanage S, Hocker A, Hopkins W, Horn D, Hou S, Hughes RE, Hurwitz M, Husemann U, Hussain N, Hussein M, Huston J, Introzzi G, Iori M, Ivanov A, James E, Jang D, Jayatilaka B, Jeon EJ, Jindariani S, Jones M, Joo KK, Jun SY, Junk TR, Kamon T, Karchin PE, Kasmi A, Kato Y, Ketchum W, Keung J, Khotilovich V, Kilminster B, Kim DH, Kim HS, Kim JE, Kim MJ, Kim SB, Kim SH, Kim YK, Kim YJ, Kimura N, Kirby M, Klimenko S, Knoepfel K, Kondo K, Kong DJ, Konigsberg J, Kotwal AV, Kreps M, Kroll J, Krop D, Kruse M, Krutelyov V, Kuhr T, Kurata M, Kwang S, Laasanen AT, Lami S, Lammel S, Lancaster M, Lander RL, Lannon K, Lath A, Latino G, LeCompte T, Lee E, Lee HS, Lee JS, Lee SW, Leo S, Leone S, Lewis JD, Limosani A, Lin CJ, Lindgren M, Lipeles E, Lister A, Litvintsev DO, Liu C, Liu H, Liu Q, Liu T, Lockwitz S, Loginov A, Lucchesi D, Lueck J, Lujan P, Lukens P, Lungu G, Lys J, Lysak R, Madrak R, Maeshima K, Maestro P, Malik S, Manca G, Manousakis-Katsikakis A, Margaroli F, Marino C, Martínez M, Mastrandrea P, Matera K, Mattson ME, Mazzacane A, Mazzanti P, McFarland KS, McIntyre P, McNulty R, Mehta A, Mehtala P, Mesropian C, Miao T, Mietlicki D, Mitra A, Miyake H, Moed S, Moggi N, Mondragon MN, Moon CS, Moore R, Morello MJ, Morlock J, Movilla Fernandez P, Mukherjee A, Muller T, Murat P, Mussini M, Nachtman J, Nagai Y, Naganoma J, Nakano I, Napier A, Nett J, Neu C, Neubauer MS, Nielsen J, Nodulman L, Noh SY, Norniella O, Nurse E, Oakes L, Oh SH, Oh YD, Oksuzian I, Okusawa T, Orava R, Ortolan L, Pagan Griso S, Pagliarone C, Palencia E, Papadimitriou V, Paramonov AA, Patrick J, Pauletta G, Paulini M, Paus C, Pellett DE, Penzo A, Phillips TJ, Piacentino G, Pianori E, Pilot J, Pitts K, Plager C, Pondrom L, Poprocki S, Potamianos K, Prokoshin F, Pranko A, Ptohos F, Punzi G, Rahaman A, Ramakrishnan V, Ranjan N, Redondo I, Renton P, Rescigno M, Riddick T, Rimondi F, Ristori L, Robson A, Rodrigo T, Rodriguez T, Rogers E, Rolli S, Roser R, Ruffini F, Ruiz A, Russ J, Rusu V, Safonov A, Sakumoto WK, Sakurai Y, Santi L, Sato K, Saveliev V, Savoy-Navarro A, Schlabach P, Schmidt A, Schmidt EE, Schwarz T, Scodellaro L, Scribano A, Scuri F, Seidel S, Seiya Y, Semenov A, Sforza F, Shalhout SZ, Shears T, Shekhar R, Shepard PF, Shimojima M, Shochet M, Shreyber-Tecker I, Simonenko A, Sinervo P, Sliwa K, Smith JR, Snider FD, Soha A, Sorin V, Song H, Squillacioti P, Stancari M, St Denis R, Stelzer B, Stelzer-Chilton O, Stentz D, Strologas J, Strycker GL, Sudo Y, Sukhanov A, Sun S, Suslov I, Takemasa K, Takeuchi Y, Tang J, Tecchio M, Teng PK, Thom J, Thome J, Thompson DS, Thompson GA, Thomson E, Toback D, Tokar S, Tollefson K, Tomura T, Tonelli D, Torre S, Torretta D, Totaro P, Trovato M, Ukegawa F, Uozumi S, Varganov A, Vázquez F, Velev G, Vellidis C, Vidal M, Vila I, Vilar R, Vizán J, Vogel M, Volpi G, Wagner P, Wagner RL, Wakisaka T, Wallny R, Wang SM, Warburton A, Waters D, Wester WC, Whiteson D, Wicklund AB, Wicklund E, Wilbur S, Wick F, Williams HH, Wilson JS, Wilson P, Winer BL, Wittich P, Wolbers S, Wolfe H, Wright T, Wu X, Wu Z, Yamamoto K, Yamato D, Yang T, Yang UK, Yang YC, Yao WM, Yeh GP, Yi K, Yoh J, Yorita K, Yoshida T, Yu GB, Yu I, Yu SS, Yun JC, Zanetti A, Zeng Y, Zhou C, Zucchelli S. Precise measurement of the W-boson mass with the CDF II detector. Phys Rev Lett 2012; 108:151803. [PMID: 22587243 DOI: 10.1103/physrevlett.108.151803] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Indexed: 05/31/2023]
Abstract
We have measured the W-boson mass M(W) using data corresponding to 2.2 fb(-1) of integrated luminosity collected in pp collisions at sqrt[s] = 1.96 TeV with the CDF II detector at the Fermilab Tevatron collider. Samples consisting of 470,126 W → eν candidates and 624,708 W → μν candidates yield the measurement M(W) = 80,387 ± 12(stat.) ± 15(syst.) = 80,387 ± 19 MeV/c2. This is the most precise measurement of the W-boson mass to date and significantly exceeds the precision of all previous measurements combined.
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Affiliation(s)
- T Aaltonen
- Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland
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Prabodh S, Prakash DSRS, Sudhakar G, Chowdary NVS, Desai V, Shekhar R. Status of copper and magnesium levels in diabetic nephropathy cases: a case-control study from South India. Biol Trace Elem Res 2011; 142:29-35. [PMID: 20552294 DOI: 10.1007/s12011-010-8750-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 06/07/2010] [Indexed: 12/23/2022]
Abstract
Diabetic nephropathy is a complication of diabetes mellitus. This present study investigates the status of copper and magnesium in diabetic nephropathy cases to establish a possible relation. Forty patients of diabetic nephropathy participated in the study as cases. Forty age- and sex-matched healthy individuals served as controls. Blood samples were collected from both cases and controls for determination of FBS, PPBS, HbA1c, microalbumin, copper, and magnesium levels. The mean concentrations of FBS, PPBS, HbA1c, and microalbumin of cases were significantly higher than that of controls. The mean magnesium levels of cases (1.60 ± 0.32 meq/L) were significantly lower than controls 2.14 ± 0.16 meq/L (p < 0.05). But the mean copper levels of cases, 165.42 ± 5.71 μg/dl, shows no significant difference with controls, 166.6 ± 5.48 μg/dl, (p > 0.05).The findings in the present study suggest that hypomagnesemia may be linked with development of diabetic nephropathy.
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Affiliation(s)
- S Prabodh
- Department of Biochemistry, NRI Medical College, General Hospital, Chinakakani, Guntur district, Andhra Pradesh, India
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Misselbrook GP, Shekhar R. Serotonin syndrome: an unusual cause of acute confusion and fever in the elderly. Acute Med 2011; 10:206-208. [PMID: 22111101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Delirium is a common cause for hospital admission among elderly patients. Although infection is the most common explanation, there is a large number of other potential causes. We present a case of acute delirium due to serotonin syndrome, precipitated by concomitant prescription of clarithromycin and fluoxetine. The symptoms improved following treatment with a benzodiazepine and discontinuation of the fluoxetine. The diagnosis and management of serotonin syndrome is discussed.
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Affiliation(s)
- G P Misselbrook
- Queen Elizabeth Foundation Hospital Kings Lynn NHS Trust, UK.
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Aaltonen T, González BA, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, Apollinari G, Appel JA, Apresyan A, Arisawa T, Artikov A, Asaadi J, Ashmanskas W, Auerbach B, Aurisano A, Azfar F, Badgett W, Barbaro-Galtieri A, Barnes VE, Barnett BA, Barria P, Bartos P, Bauce M, Bauer G, Bedeschi F, Beecher D, Behari S, Bellettini G, Bellinger J, Benjamin D, Beretvas A, Bhatti A, Binkley M, Bisello D, Bizjak I, Bland KR, Blocker C, Blumenfeld B, Bocci A, Bodek A, Bortoletto D, Boudreau J, Boveia A, Brau B, Brigliadori L, Brisuda A, Bromberg C, Brucken E, Bucciantonio M, Budagov J, Budd HS, Budd S, Burkett K, Busetto G, Bussey P, Buzatu A, Cabrera S, Calancha C, Camarda S, Campanelli M, Campbell M, Canelli F, Canepa A, Carls B, Carlsmith D, Carosi R, Carrillo S, Carron S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavaliere V, Cavalli-Sforza M, Cerri A, Cerrito L, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Chlebana F, Cho K, Chokheli D, Chou JP, Chung WH, Chung YS, Ciobanu CI, Ciocci MA, Clark A, Clark D, Compostella G, Convery ME, Conway J, Corbo M, Cordelli M, Cox CA, Cox DJ, Crescioli F, Almenar CC, Cuevas J, Culbertson R, Dagenhart D, d'Ascenzo N, Datta M, de Barbaro P, De Cecco S, De Lorenzo G, Dell'Orso M, Deluca C, Demortier L, Deng J, Deninno M, Devoto F, d'Errico M, Di Canto A, Di Ruzza B, Dittmann JR, D'Onofrio M, Donati S, Dong P, Dorigo T, Ebina K, Elagin A, Eppig A, Erbacher R, Errede D, Errede S, Ershaidat N, Eusebi R, Fang HC, Farrington S, Feindt M, Fernandez JP, Ferrazza C, Field R, Flanagan G, Forrest R, Frank MJ, Franklin M, Freeman JC, Furic I, Gallinaro M, Galyardt J, Garcia JE, Garfinkel AF, Garosi P, Gerberich H, Gerchtein E, Giagu S, Giakoumopoulou V, Giannetti P, Gibson K, Ginsburg CM, Giokaris N, Giromini P, Giunta M, Giurgiu G, Glagolev V, Glenzinski D, Gold M, Goldin D, Goldschmidt N, Golossanov A, Gomez G, Gomez-Ceballos G, Goncharov M, González O, Gorelov I, Goshaw AT, Goulianos K, Gresele A, Grinstein S, Grosso-Pilcher C, da Costa JG, Gunay-Unalan Z, Haber C, Hahn SR, Halkiadakis E, Hamaguchi A, Han JY, Happacher F, Hara K, Hare D, Hare M, Harr RF, Hatakeyama K, Hays C, Heck M, Heinrich J, Herndon M, Hewamanage S, Hidas D, Hocker A, Hopkins W, Horn D, Hou S, Hughes RE, Hurwitz M, Husemann U, Hussain N, Hussein M, Huston J, Introzzi G, Iori M, Ivanov A, James E, Jang D, Jayatilaka B, Jeon EJ, Jha MK, Jindariani S, Johnson W, Jones M, Joo KK, Jun SY, Junk TR, Kamon T, Karchin PE, Kato Y, Ketchum W, Keung J, Khotilovich V, Kilminster B, Kim DH, Kim HS, Kim HW, Kim JE, Kim MJ, Kim SB, Kim SH, Kim YK, Kimura N, Klimenko S, Kondo K, Kong DJ, Konigsberg J, Korytov A, Kotwal AV, Kreps M, Kroll J, Krop D, Krumnack N, Kruse M, Krutelyov V, Kuhr T, Kurata M, Kwang S, Laasanen AT, Lami S, Lammel S, Lancaster M, Lander RL, Lannon K, Lath A, Latino G, Lazzizzera I, Lecompte T, Lee E, Lee HS, Lee JS, Lee SW, Leo S, Leone S, Lewis JD, Lin CJ, Linacre J, Lindgren M, Lipeles E, Lister A, Litvintsev DO, Liu C, Liu Q, Liu T, Lockwitz S, Lockyer NS, Loginov A, Lucchesi D, Lueck J, Lujan P, Lukens P, Lungu G, Lys J, Lysak R, Madrak R, Maeshima K, Makhoul K, Maksimovic P, Malik S, Manca G, Manousakis-Katsikakis A, Margaroli F, Marino C, Martínez M, Martínez-Ballarín R, Mastrandrea P, Mathis M, Mattson ME, Mazzanti P, McFarland KS, McIntyre P, McNulty R, Mehta A, Mehtala P, Menzione A, Mesropian C, Miao T, Mietlicki D, Mitra A, Miyake H, Moed S, Moggi N, Mondragon MN, Moon CS, Moore R, Morello MJ, Morlock J, Fernandez PM, Mukherjee A, Muller T, Murat P, Mussini M, Nachtman J, Nagai Y, Naganoma J, Nakano I, Napier A, Nett J, Neu C, Neubauer MS, Nielsen J, Nodulman L, Norniella O, Nurse E, Oakes L, Oh SH, Oh YD, Oksuzian I, Okusawa T, Orava R, Ortolan L, Griso SP, Pagliarone C, Palencia E, Papadimitriou V, Paramonov AA, Patrick J, Pauletta G, Paulini M, Paus C, Pellett DE, Penzo A, Phillips TJ, Piacentino G, Pianori E, Pilot J, Pitts K, Plager C, Pondrom L, Potamianos K, Poukhov O, Prokoshin F, Pronko A, Ptohos F, Pueschel E, Punzi G, Pursley J, Rahaman A, Ramakrishnan V, Ranjan N, Redondo I, Renton P, Rescigno M, Rimondi F, Ristori L, Robson A, Rodrigo T, Rodriguez T, Rogers E, Rolli S, Roser R, Rossi M, Ruffini F, Ruiz A, Russ J, Rusu V, Safonov A, Sakumoto WK, Santi L, Sartori L, Sato K, Saveliev V, Savoy-Navarro A, Schlabach P, Schmidt A, Schmidt EE, Schmidt MP, Schmitt M, Schwarz T, Scodellaro L, Scribano A, Scuri F, Sedov A, Seidel S, Seiya Y, Semenov A, Sforza F, Sfyrla A, Shalhout SZ, Shears T, Shekhar R, Shepard PF, Shimojima M, Shiraishi S, Shochet M, Shreyber I, Simonenko A, Sinervo P, Sissakian A, Sliwa K, Smith JR, Snider FD, Soha A, Somalwar S, Sorin V, Squillacioti P, Stanitzki M, St Denis R, Stelzer B, Stelzer-Chilton O, Stentz D, Strologas J, Strycker GL, Sudo Y, Sukhanov A, Suslov I, Takemasa K, Takeuchi Y, Tang J, Tecchio M, Teng PK, Thom J, Thome J, Thompson GA, Thomson E, Ttito-Guzmán P, Tkaczyk S, Toback D, Tokar S, Tollefson K, Tomura T, Tonelli D, Torre S, Torretta D, Totaro P, Trovato M, Tu Y, Turini N, Ukegawa F, Uozumi S, Varganov A, Vataga E, Vázquez F, Velev G, Vellidis C, Vidal M, Vila I, Vilar R, Vogel M, Volpi G, Wagner P, Wagner RL, Wakisaka T, Wallny R, Wang SM, Warburton A, Waters D, Weinberger M, Wester WC, Whitehouse B, Whiteson D, Wicklund AB, Wicklund E, Wilbur S, Wick F, Williams HH, Wilson JS, Wilson P, Winer BL, Wittich P, Wolbers S, Wolfe H, Wright T, Wu X, Wu Z, Yamamoto K, Yamaoka J, Yang T, Yang UK, Yang YC, Yao WM, Yeh GP, Yi K, Yoh J, Yorita K, Yoshida T, Yu GB, Yu I, Yu SS, Yun JC, Zanetti A, Zeng Y, Zucchelli S. Improved search for a Higgs boson produced in association with Z → l+ l- in pp collisions sqrt[s] = 1.96 TeV. Phys Rev Lett 2010; 105:251802. [PMID: 21231575 DOI: 10.1103/physrevlett.105.251802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Indexed: 05/30/2023]
Abstract
We search for the standard model Higgs boson produced with a Z boson in 4.1 fb(-1) of integrated luminosity collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electrons or muons, we set 95% credibility level upper limits on the ZH production cross section multiplied by the H → bb branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches. At a Higgs boson mass of 115 GeV/c2 we set a limit of 5.9 times the standard model cross section.
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Affiliation(s)
- T Aaltonen
- Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland
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Joshi M, Khanna R, Shekhar R, Jha K. Chitosan nanocoating on cotton textile substrate using layer-by-layer self-assembly technique. J Appl Polym Sci 2010. [DOI: 10.1002/app.32867] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Shekhar R, Karunasagar D, Ranjit M, Arunachalam J. Determination of Elemental Constituents in Different Matrix Materials and Flow Injection Studies by the Electrolyte Cathode Glow Discharge Technique with a New Design. Anal Chem 2009; 81:8157-66. [DOI: 10.1021/ac901380v] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. Shekhar
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL Post, Hyderabad-500062, India
| | - D. Karunasagar
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL Post, Hyderabad-500062, India
| | - Manjusha Ranjit
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL Post, Hyderabad-500062, India
| | - J. Arunachalam
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL Post, Hyderabad-500062, India
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Aaltonen T, Adelman J, Akimoto T, Albrow MG, Alvarez González B, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, Apollinari G, Apresyan A, Arisawa T, Artikov A, Ashmanskas W, Attal A, Aurisano A, Azfar F, Azzurri P, Badgett W, Barbaro-Galtieri A, Barnes VE, Barnett BA, Bartsch V, Bauer G, Beauchemin PH, Bedeschi F, Bednar P, Beecher D, Behari S, Bellettini G, Bellinger J, Benjamin D, Beretvas A, Beringer J, Bhatti A, Binkley M, Bisello D, Bizjak I, Blair RE, Blocker C, Blumenfeld B, Bocci A, Bodek A, Boisvert V, Bolla G, Bortoletto D, Boudreau J, Boveia A, Brau B, Bridgeman A, Brigliadori L, Bromberg C, Brubaker E, Budagov J, Budd HS, Budd S, Burkett K, Busetto G, Bussey P, Buzatu A, Byrum KL, Cabrera S, Calancha C, Campanelli M, Campbell M, Canelli F, Canepa A, Carlsmith D, Carosi R, Carrillo S, Carron S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavaliere V, Cavalli-Sforza M, Cerri A, Cerrito L, Chang SH, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Chlebana F, Cho K, Chokheli D, Chou JP, Choudalakis G, Chuang SH, Chung K, Chung WH, Chung YS, Ciobanu CI, Ciocci MA, Clark A, Clark D, Compostella G, Convery ME, Conway J, Copic K, Cordelli M, Cortiana G, Cox DJ, Crescioli F, Cuenca Almenar C, Cuevas J, Culbertson R, Cully JC, Dagenhart D, Datta M, Davies T, de Barbaro P, De Cecco S, Deisher A, De Lorenzo G, Dell'orso M, Deluca C, Demortier L, Deng J, Deninno M, Derwent PF, di Giovanni GP, Dionisi C, Di Ruzza B, Dittmann JR, D'Onofrio M, Donati S, Dong P, Donini J, Dorigo T, Dube S, Efron J, Elagin A, Erbacher R, Errede D, Errede S, Eusebi R, Fang HC, Farrington S, Fedorko WT, Feild RG, Feindt M, Fernandez JP, Ferrazza C, Field R, Flanagan G, Forrest R, Franklin M, Freeman JC, Furic I, Gallinaro M, Galyardt J, Garberson F, Garcia JE, Garfinkel AF, Genser K, Gerberich H, Gerdes D, Gessler A, Giagu S, Giakoumopoulou V, Giannetti P, Gibson K, Gimmell JL, Ginsburg CM, Giokaris N, Giordani M, Giromini P, Giunta M, Giurgiu G, Glagolev V, Glenzinski D, Gold M, Goldschmidt N, Golossanov A, Gomez G, Gomez-Ceballos G, Goncharov M, González O, Gorelov I, Goshaw AT, Goulianos K, Gresele A, Grinstein S, Grosso-Pilcher C, Grundler U, Guimaraes da Costa J, Gunay-Unalan Z, Haber C, Hahn K, Hahn SR, Halkiadakis E, Han BY, Han JY, Handler R, Happacher F, Hara K, Hare D, Hare M, Harper S, Harr RF, Harris RM, Hartz M, Hatakeyama K, Hauser J, Hays C, Heck M, Heijboer A, Heinemann B, Heinrich J, Henderson C, Herndon M, Heuser J, Hewamanage S, Hidas D, Hill CS, Hirschbuehl D, Hocker A, Hou S, Houlden M, Hsu SC, Huffman BT, Hughes RE, Husemann U, Huston J, Incandela J, Introzzi G, Iori M, Ivanov A, James E, Jayatilaka B, Jeon EJ, Jha MK, Jindariani S, Johnson W, Jones M, Joo KK, Jun SY, Jung JE, Junk TR, Kamon T, Kar D, Karchin PE, Kato Y, Kephart R, Keung J, Khotilovich V, Kilminster B, Kim DH, Kim HS, Kim JE, Kim MJ, Kim SB, Kim SH, Kim YK, Kimura N, Kirsch L, Klimenko S, Knuteson B, Ko BR, Koay SA, Kondo K, Kong DJ, Konigsberg J, Korytov A, Kotwal AV, Kreps M, Kroll J, Krop D, Krumnack N, Kruse M, Krutelyov V, Kubo T, Kuhr T, Kulkarni NP, Kurata M, Kusakabe Y, Kwang S, Laasanen AT, Lami S, Lammel S, Lancaster M, Lander RL, Lannon K, Lath A, Latino G, Lazzizzera I, Lecompte T, Lee E, Lee SW, Leone S, Lewis JD, Lin CS, Linacre J, Lindgren M, Lipeles E, Lister A, Litvintsev DO, Liu C, Liu T, Lockyer NS, Loginov A, Loreti M, Lovas L, Lu RS, Lucchesi D, Lueck J, Luci C, Lujan P, Lukens P, Lungu G, Lyons L, Lys J, Lysak R, Lytken E, Mack P, Macqueen D, Madrak R, Maeshima K, Makhoul K, Maki T, Maksimovic P, Malde S, Malik S, Manca G, Manousakis-Katsikakis A, Margaroli F, Marino C, Marino CP, Martin A, Martin V, Martínez M, Martínez-Ballarín R, Maruyama T, Mastrandrea P, Masubuchi T, Mattson ME, Mazzanti P, McFarland KS, McIntyre P, McNulty R, Mehta A, Mehtala P, Menzione A, Merkel P, Mesropian C, Miao T, Miladinovic N, Miller R, Mills C, Milnik M, Mitra A, Mitselmakher G, Miyake H, Moggi N, Moon CS, Moore R, Morello MJ, Morlok J, Movilla Fernandez P, Mülmenstädt J, Mukherjee A, Muller T, Mumford R, Murat P, Mussini M, Nachtman J, Nagai Y, Nagano A, Naganoma J, Nakamura K, Nakano I, Napier A, Necula V, Neu C, Neubauer MS, Nielsen J, Nodulman L, Norman M, Norniella O, Nurse E, Oakes L, Oh SH, Oh YD, Oksuzian I, Okusawa T, Orava R, Osterberg K, Pagan Griso S, Pagliarone C, Palencia E, Papadimitriou V, Papaikonomou A, Paramonov AA, Parks B, Pashapour S, Patrick J, Pauletta G, Paulini M, Paus C, Pellett DE, Penzo A, Phillips TJ, Piacentino G, Pianori E, Pinera L, Pitts K, Plager C, Pondrom L, Poukhov O, Pounder N, Prakoshyn F, Pronko A, Proudfoot J, Ptohos F, Pueschel E, Punzi G, Pursley J, Rademacker J, Rahaman A, Ramakrishnan V, Ranjan N, Redondo I, Reisert B, Rekovic V, Renton P, Rescigno M, Richter S, Rimondi F, Ristori L, Robson A, Rodrigo T, Rodriguez T, Rogers E, Rolli S, Roser R, Rossi M, Rossin R, Roy P, Ruiz A, Russ J, Rusu V, Saarikko H, Safonov A, Sakumoto WK, Saltó O, Santi L, Sarkar S, Sartori L, Sato K, Savoy-Navarro A, Scheidle T, Schlabach P, Schmidt A, Schmidt EE, Schmidt MA, Schmidt MP, Schmitt M, Schwarz T, Scodellaro L, Scott AL, Scribano A, Scuri F, Sedov A, Seidel S, Seiya Y, Semenov A, Sexton-Kennedy L, Sfyrla A, Shalhout SZ, Shears T, Shekhar R, Shepard PF, Sherman D, Shimojima M, Shiraishi S, Shochet M, Shon Y, Shreyber I, Sidoti A, Sinervo P, Sisakyan A, Slaughter AJ, Slaunwhite J, Sliwa K, Smith JR, Snider FD, Snihur R, Soha A, Somalwar S, Sorin V, Spalding J, Spreitzer T, Squillacioti P, Stanitzki M, St Denis R, Stelzer B, Stelzer-Chilton O, Stentz D, Strologas J, Stuart D, Suh JS, Sukhanov A, Suslov I, Suzuki T, Taffard A, Takashima R, Takeuchi Y, Tanaka R, Tecchio M, Teng PK, Terashi K, Thom J, Thompson AS, Thompson GA, Thomson E, Tipton P, Tiwari V, Tkaczyk S, Toback D, Tokar S, Tollefson K, Tomura T, Tonelli D, Torre S, Torretta D, Totaro P, Tourneur S, Tu Y, Turini N, Ukegawa F, Vallecorsa S, van Remortel N, Varganov A, Vataga E, Vázquez F, Velev G, Vellidis C, Veszpremi V, Vidal M, Vidal R, Vila I, Vilar R, Vine T, Vogel M, Volobouev I, Volpi G, Würthwein F, Wagner P, Wagner RG, Wagner RL, Wagner-Kuhr J, Wagner W, Wakisaka T, Wallny R, Wang SM, Warburton A, Waters D, Weinberger M, Wester WC, Whitehouse B, Whiteson D, Whiteson S, Wicklund AB, Wicklund E, Williams G, Williams HH, Wilson P, Winer BL, Wittich P, Wolbers S, Wolfe C, Wright T, Wu X, Wynne SM, Xie S, Yagil A, Yamamoto K, Yamaoka J, Yang UK, Yang YC, Yao WM, Yeh GP, Yoh J, Yorita K, Yoshida T, Yu GB, Yu I, Yu SS, Yun JC, Zanello L, Zanetti A, Zaw I, Zhang X, Zheng Y, Zucchelli S. Measurement of the top-quark mass with dilepton events selected using neuroevolution at CDF. Phys Rev Lett 2009; 102:152001. [PMID: 19518620 DOI: 10.1103/physrevlett.102.152001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Indexed: 05/27/2023]
Abstract
We report a measurement of the top-quark mass M_{t} in the dilepton decay channel tt[over ] --> bl;{'+} nu_{l};{'}b[over ]l;{-}nu[over ]_{l}. Events are selected with a neural network which has been directly optimized for statistical precision in top-quark mass using neuroevolution, a technique modeled on biological evolution. The top-quark mass is extracted from per-event probability densities that are formed by the convolution of leading order matrix elements and detector resolution functions. The joint probability is the product of the probability densities from 344 candidate events in 2.0 fb;{-1} of pp[over ] collisions collected with the CDF II detector, yielding a measurement of M_{t} = 171.2 +/- 2.7(stat) +/- 2.9(syst) GeV / c;{2}.
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Affiliation(s)
- T Aaltonen
- Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland
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Abstract
Transient global amnesia (TGA) is an isolated amnesic syndrome with normal neurological examination where patients remain alert and communicative with no loss of personal identity; however, they experience striking loss of memory for recent events and an impaired ability to retain new information. TGA could be triggered by venous congestion and there is evidence of association between younger patients and history of migraine. Most episodes last 2-12 h and the recurrence rate of future amnesic events is very low.
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Affiliation(s)
- R Shekhar
- Stroke Medicine, St Georges Hospital, London, UK.
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Wu J, Fuss M, Shekhar R, D'Souza W. SU-GG-J-147: Pitfalls of the ITV and PTV Dose in Thoracic Anatomy and Composite 4D Dose Calculation. Med Phys 2008. [DOI: 10.1118/1.2961696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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25
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Wu J, Dandekar O, Nazareth D, Lei P, D'Souza W, Shekhar R. Effect of ultrasound probe on dose delivery during real-time ultrasound-guided tumor tracking. Conf Proc IEEE Eng Med Biol Soc 2008; 2006:3799-802. [PMID: 17946582 DOI: 10.1109/iembs.2006.260076] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Ultrasound is a noninvasive and less costly modality for real-time imaging of soft tissues. It has the capability of tracking soft tissue at levels of submillimeter precision even in the presence of radiation beams. The effect of a transducer on radiation dose is not fully known. The best imaging location for an ultrasound transducer happens to coincide with the path of an anterior-posterior beam in intensity modulated radiation therapy (IMRT). This study indicates a significant change in dose when this juxtaposition occurs. If the anterior-posterior beam is avoided in IMRT planning, however, the effect of the transducer on radiotherapy is found to be negligible.
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Affiliation(s)
- Jianzhou Wu
- Dept. of Radiat. Oncology, Maryland Univ. Sch. of Med., Baltimore, MD 21201, USA
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Dandekar O, Shekhar R. FPGA-Accelerated Deformable Image Registration for Improved Target-Delineation During CT-Guided Interventions. IEEE Trans Biomed Circuits Syst 2007; 1:116-127. [PMID: 23851666 DOI: 10.1109/tbcas.2007.909023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Minimally invasive image-guided interventions (IGIs) are time and cost efficient, minimize unintended damage to healthy tissue, and lead to faster patient recovery. With the advent of multislice computed tomography (CT), many IGIs are now being performed under volumetric CT guidance. Registering pre-and intraprocedural images for improved intraprocedural target delineation is a fundamental need in the IGI workflow. Earlier approaches to meet this need primarily employed rigid body approximation, which may not be valid because of nonrigid tissue misalignment between these images. Intensity-based automatic deformable registration is a promising option to correct for this misalignment; however, the long execution times of these algorithms have prevented their use in clinical workflow. This article presents a field-programmable gate array-based architecture for accelerated implementation of mutual information (Ml)-based deformable registration. The reported implementation reduces the execution time of MI-based deformable registration from hours to a few minutes. This work also demonstrates successful registration of abdominal intraprocedural noncontrast CT (iCT) images with preprocedural contrast-enhanced CT (preCT) and positron emission tomography (PET) images using the reported solution. The registration accuracy for this application was evaluated using 5 iCT-preCT and 5 iCT-PET image pairs. The registration accuracy of the hardware implementation is comparable with that achieved using a software implementation and is on the order of a few millimeters. This registration accuracy, coupled with the execution speed and compact implementation of the reported solution, makes it suitable for integration in the IGI-workflow.
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27
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Wu J, Shekhar R, D'Souza W. TU-FF-A3-03: Do Mobile Tumors in the Lung Deform During Normal Respiration - An Image Registration Investigation? Med Phys 2007. [DOI: 10.1118/1.2761445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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28
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Wu J, Li H, Shekhar R, D'Souza W. TH-D-AUD-06: Investigation of Planning and Delivery Techniques for Stereotactic Body Radiation Therapy in Lung Tumors. Med Phys 2007. [DOI: 10.1118/1.2761725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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29
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Castro-Pareja C, Shekhar R. Physically correct mesh manipulation in multi-level free-form deformation-based nonrigid registration. Conf Proc IEEE Eng Med Biol Soc 2007; 2004:1687-90. [PMID: 17272028 DOI: 10.1109/iembs.2004.1403508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We present a new solution to prevent mesh folding artifacts common in free-form deformation-based nonrigid registration. Our algorithm imposes linear bounds on the search space of control point locations, thereby enabling the use of constrained optimization algorithms. We also introduce a new method for controlling the mesh rigidity, based on maximum voxel displacement. Our method allows local control of the deformation, based on a priori knowledge of the magnitude of possible local deformations.
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Affiliation(s)
- C Castro-Pareja
- Department of Electrical and Computer Engineering, Ohio State University, Columbus, OH, USA
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30
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Wu J, Nazareth D, Castro-Pareja C, Lei P, Shekhar R, D'Souza W. WE-D-ValB-08: 4D Dose Calculation Using 3D Elastic Dose Registration in Lung IMRT. Med Phys 2006. [DOI: 10.1118/1.2241762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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31
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D′Souza W, Castro-Pareja C, Nazareth D, Lei P, Naqvi S, Shekhar R. Intra-Fraction Dose Registration using Relative Phase-Time Dose-Weighted 3D Dose Distributions and Deformable Image Registration. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Shekhar R, Lei P, Walimbe V, Yu C, D'Souza W. TU-C-J-6B-05: A Novel Volume Subdivision-Based Algorithm to Register Respiration Phase-Correlated Lung CT Images. Med Phys 2005. [DOI: 10.1118/1.1998349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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33
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34
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Sanjay K, Arora A, Shekhar R, Das R. Electroremediation of Cr(VI) contaminated soils: kinetics and energy efficiency. Colloids Surf A Physicochem Eng Asp 2003. [DOI: 10.1016/s0927-7757(03)00229-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Chaudhury S, Shekhar R, Bhardwaj P, John TR. Cardiovascular effects of ect. Indian J Psychiatry 2001; 43:287-8. [PMID: 21407875 PMCID: PMC2956162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- S Chaudhury
- LT. COL. SUPRAKASH CHAUDHURY, MD., Ph.D., Head Department of Psychiatry, Command Hospital, Northern Comman, C/o 56 APO
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36
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Kumar PD, Shekhar R, Dickerson R. Recurrent aortic root hematograft endocarditis related to indwelling hemodialysis catheters. Am J Med 2001; 110:743. [PMID: 11417567 DOI: 10.1016/s0002-9343(01)00731-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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37
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Klingensmith JD, Shekhar R, Vince DG. Evaluation of three-dimensional segmentation algorithms for the identification of luminal and medial-adventitial borders in intravascular ultrasound images. IEEE Trans Med Imaging 2000; 19:996-1011. [PMID: 11131497 DOI: 10.1109/42.887615] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Intravascular ultrasound (IVUS) provides direct depiction of coronary artery anatomy, including plaque and vessel area, which is important in quantitative studies on the progression or regression of coronary artery disease. Traditionally, these studies have relied on manual evaluation, which is laborious, time consuming, and subject to large interobserver and intraobserver variability. A new technique, called active surface segmentation, alleviates these limitations and makes strides toward routine analyses. However, for three-dimensional (3-D) plaque assessment or 3-D reconstruction to become a clinical reality, methods must be developed which can analyze many images quickly. Presented is a comparison between two active surface techniques for three-dimensional segmentation of luminal and medial-adventitial borders. The force-acceleration technique and the neighborhood-search technique accurately detected both borders in vivo (r2 = 0.95 and 0.99, Williams' index = 0.67 and 0.65, and r2 = 0.95 and 0.99, WI = 0.67 and 0.70, respectively). However, the neighborhood-search technique was significantly faster and required less computation. Volume calculations for both techniques (r2 = 0.99 and r2 = 0.99) also agreed with a known-volume phantom. Active surface segmentation allows 3-D assessment of coronary morphology and further developments with this technology will provide clinical analysis tools.
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Affiliation(s)
- J D Klingensmith
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic Foundation, OH 44195, USA
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38
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Cothren RM, Shekhar R, Tuzcu EM, Nissen SE, Cornhill JF, Vince DG. Three-dimensional reconstruction of the coronary artery wall by image fusion of intravascular ultrasound and bi-plane angiography. Int J Card Imaging 2000; 16:69-85. [PMID: 10928342 DOI: 10.1023/a:1006304419505] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Intravascular ultrasound (IVUS) is becoming increasingly accepted for assessing coronary anatomy. However, its utility in visualizing and quantifying coronary morphology has been limited by its 2D tomographic nature. This study presents a 3D reconstruction technique that accurately preserves 3D geometric information. METHODS AND RESULTS Images obtained from manual IVUS pullbacks and continuous bi-plane angiography were fused, using angiography to reconstruct the transducer trajectory and aid in solving for the correct rotational orientation. A novel 3D active surface method automatically identified the luminal and medial-adventitial borders which, when superimposed on the transducer trajectory, could be surface-rendered for visualization and morphometry. Segmentation agreed well with manual assessment, and 3D luminal shape matched that of angiography when projected to 2D. CONCLUSIONS We conclude that this method provides an accurate reconstruction of the vessel's anatomy, which accounts for the true curvature of the vessel.
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Affiliation(s)
- R M Cothren
- Department of Biomedical Engineering, The Cleveland Clinic Foundation, Ohio 44195, USA
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39
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Klingensmith JD, Vince DG, Kuban BD, Shekhar R, Tuzcu EM, Nissen SE, Cornhill JF. Assessment of coronary compensatory enlargement by three-dimensional intravascular ultrasound. Int J Card Imaging 2000; 16:87-98. [PMID: 10928343 DOI: 10.1023/a:1006333619358] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Several techniques have been used to demonstrate that human arteries respond to atherosclerosis by increasing their total arterial area to prevent a decrease in blood flow. Three-dimensional reconstructions of coronary arteries can document this compensatory response accurately and specifically. Seven human coronary arteries were reconstructed using intravascular ultrasound and biplane angiography, and vessel geometries were quantified. In all seven vessels, as plaque area increased, overall vessel area increased (R = 0.986, 0.933, 0.984, 0.678, 0.763, 0.963, and 0.830), but luminal cross-sectional area did not significantly decrease. Focal compensatory enlargement was identified in each vessel, and in some cases this response appeared to occur until the vessel was 65% occluded. Luminal enlargement near the proximal ends was attributed to the natural taper of the vessel. The semi-automated, three-dimensional segmentation technique used in this study allows reproducible quantification, as there is no subjective manual tracing involved. Following the intravascular ultrasound transducer in time and space with biplane angiography allows for accurate reconstruction with or without automated pullback devices. Information on the rate of change of vessel measurements is also presented, which, when combined with visualization of accurate 3D geometry, provides a unique assessment of coronary compensatory enlargement. This reconstruction technique can be applied in a clinical environment with no major modification.
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Affiliation(s)
- J D Klingensmith
- Department of Biomedical Engineering, Lerner Research Institute, The Cleveland Clinic Foundation, OH 44195, USA
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40
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Balarama Krishna M, Shekhar R, Karunasagar D, Arunachalam J. Multi-element characterization of high purity cadmium using inductively coupled plasma quadrupole mass spectrometry and glow-discharge quadrupole mass spectrometry. Anal Chim Acta 2000. [DOI: 10.1016/s0003-2670(99)00860-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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41
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Shekhar R, Cothren RM, Vince DG, Chandra S, Thomas JD, Cornhill JF. Three-dimensional segmentation of luminal and adventitial borders in serial intravascular ultrasound images. Comput Med Imaging Graph 1999; 23:299-309. [PMID: 10634142 DOI: 10.1016/s0895-6111(99)00029-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Intravascular ultrasound (IVUS) provides exact anatomy of arteries, allowing accurate quantitative analysis. Automated segmentation of IVUS images is a prerequisite for routine quantitative analyses. We present a new three-dimensional (3D) segmentation technique, called active surface segmentation, which detects luminal and adventitial borders in IVUS pullback examinations of coronary arteries. The technique was validated against expert tracings by computing correlation coefficients (range 0.83-0.97) and William's index values (range 0.37-0.66). The technique was statistically accurate, robust to image artifacts, and capable of segmenting a large number of images rapidly. Active surface segmentation enabled geometrically accurate 3D reconstruction and visualization of coronary arteries and volumetric measurements.
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Affiliation(s)
- R Shekhar
- Department of Biomedical Engineering, The Lerner Research Institute, The Cleveland Clinic Foundation, OH, USA.
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